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Built for Adventure, Refined for Everyday
The Longines HydroConquest L3.788.4.56.6 represents the latest evolution of one of Longines' most accomplished dive watches. Combining robust performance with refined Swiss styling, this contemporary 42mm timepiece introduces a redesigned case, enhanced ergonomics and an upgraded automatic movement, making it an exceptional companion both beneath the waves and on dry land.
Featuring a striking black lacquered dial, a scratch-resistant black ceramic bezel and the latest Longines Calibre L888.5, the HydroConquest delivers professional diving capability alongside the elegance and versatility that define Longines sports watches.
A Contemporary Dive Watch Design
The HydroConquest collection has long been recognised for balancing technical performance with timeless aesthetics. The L3.788.4.56.6 continues this tradition with a clean, highly legible dial designed for optimum visibility in all conditions.
The polished black lacquered dial contrasts beautifully against bold applied indexes and polished hands, all filled with Swiss Super-LumiNova® for excellent low-light readability. A discreet date window at 3 o'clock preserves the dial's balanced appearance, while the unidirectional black ceramic bezel offers outstanding durability and scratch resistance.
Longines Calibre L888.5
At the heart of the HydroConquest is the exclusive Longines Calibre L888.5, an automatic mechanical movement engineered for precision, reliability and everyday performance.
The movement features:
- Automatic mechanical movement
- Approx. 72-hour power reserve
- Monocrystalline silicon balance spring
- Frequency of 25,200 vibrations per hour
- Hours, minutes, seconds and date display
The inclusion of a silicon balance spring enhances resistance to magnetism while improving long-term precision and reliability, allowing Longines to offer an extended five-year manufacturer warranty.
Engineered for Professional Performance
Designed to meet the demands of serious divers, the HydroConquest features a 42mm stainless steel case with a screw-down crown and screw-down case back, ensuring dependable performance in challenging environments.
Water resistant to 300 metres (30 bar), the watch is fitted with a scratch-resistant sapphire crystal featuring multi-layer anti-reflective coating on both sides for exceptional clarity. The stainless steel bracelet is secured by a double-security folding clasp with integrated micro-adjustment, allowing the fit to be adjusted quickly and comfortably throughout the day.
Sporting Capability Meets Swiss Elegance
While engineered as a professional dive watch, the HydroConquest's refined proportions and premium finishing allow it to transition effortlessly from outdoor adventure to everyday wear.
Its combination of polished and brushed surfaces, ceramic bezel and crisp black dial creates a versatile aesthetic that feels equally at home with casual attire or business dress.
A Modern Longines Classic
The HydroConquest L3.788.4.56.6 perfectly demonstrates Longines' expertise in producing luxury sports watches that combine technical innovation with timeless design.
With its upgraded movement, extended power reserve, silicon balance spring and refined new case design, it is an outstanding choice for those seeking a versatile Swiss dive watch built for a lifetime of exploration.
Key Features
- Reference: L3.788.4.56.6
- Collection: Longines HydroConquest
- Longines Calibre L888.5
- Automatic mechanical movement
- Approx. 72-hour power reserve
- Monocrystalline silicon balance spring
- 25,200 vibrations per hour
- 42mm stainless steel case
- Black lacquered polished dial
- Date display at 3 o'clock
- Black ceramic unidirectional rotating bezel
- Screw-down crown
- Screw-down case back
- Scratch-resistant sapphire crystal
- Multi-layer anti-reflective coating on both sides
- Stainless steel bracelet
- Double-security folding clasp with integrated micro-adjustment
- Water resistant to 300 metres (30 bar)
- Swiss Super-LumiNova® hands and indexes
- Swiss Made
- Five-year Longines manufacturer's warranty
We offer complimentary secure delivery to addresses in the UK.
For all online orders Deacons will arrange delivery of the goods in accordance with the delivery details provided by you. Delivery will be made by Royal Mail Special Next Day delivery requiring a signature on receipt. Please allow at least 3 - 5 working days from acceptance of your order for delivery. Please note that we can only deliver to UK addresses.
We hope you will love your purchase, but should you change your mind, a refund or exchange on online purchases can be requested within 14 days of receiving delivery. If you wish to return an item, it must be in its original unused condition and packaging.
Refunds will be provided against the original payment method or credit/debit card used to complete the purchase. If you wish to return your product, please use a secure return service with the appropriate insurance level and with full tracking, as you are responsible until this product is received. If your return is due to a damaged or defective product then we will refund the delivery charges and pay your costs of returning it to Deacons.
All returns must be sent to D&S Limited, 11-15 Wood Street, Old Town, Swindon, SN1 4AN
